Assessing the FACTS at Kayenta

Western Area Power Administration has utilized an advanced series compensation system (ACS) in the Shiprock-to-Glen Canyon section of its high voltage transmission system. Like other high voltage lines, the link could only run at 75% of its capacity. The ACS, installed at the Kayenta substation in Arizona, increased the line's capacity by 33%, enough energy to cover costs of the upgrade within four years. Similar systems are expected to be applied throughout the world.
The world's first advanced series compensator with controllable series impedance as a flexible AC transmission (FACTS) device has been introduced at Western Area Power Administration's Kayenta substation in Arizona, USA. [...]